Ms. Dworatzek is an environmental microbiologist and Principal Scientist at SiREM with advanced technical experience in laboratory treatability studies for the evaluation of remediation technologies in the laboratory and the scale up of growth of aerobic and anaerobic microbial cultures for bioaugmentation.She provides senior technical oversight for treatability studies for a wide range of environmental contaminants, including halogenated organics (e.g., solvents, pesticides, etc.), both alone and in complex mixtures. She currently oversees maintenance and culturing of KB-1® and KB-1® Plus dehalorespiring microbial cultures that have been widely used in field demonstrations to improve the rate and extent of bioremediation of chlorinated solvents in groundwater (e.g., PCE and TCE dechlorination to ethene), as well as the development of new bioaugmentation cultures including 1,4-dioxane, 1,2,3-trichloropropane, benzene, toluene and xylene. In addition to her technical responsibilities, Sandra also provides customer support and contributes to SiREM's marketing efforts in North America.

Laboratory manager conducting biotreatability studies and responsible for growth and development bioaugmentation culture KB-1.